Federal authorities captured an escaped prison inmate from Madras on Friday in downtown Portland after he spent four weeks on the run.

Federal Protective Service officers spotted Clinton Orvill Swearingen outside Pioneer Courthouse on Friday at about 4 p.m. He was sitting with a backpack and other gear against a wall at the government building, which raised their concerns, according to Supervisory U.S. Deputy Marshal Eric Wahlstrom.

Residents in and around Madras, a town that straddles U.S. 97 between Warm Springs and Redmond, were cautioned to be on the lookout. Authorities soon found bloody clothes in a Madras neighborhood, but it was unclear whether they belonged to Swearingen.

As police from around the region kept an eye out, Jefferson County's sheriff reported that he believed Swearingen had fled the area.